Socket



- March 24, 1925. 1,530,471

J. R. ALLEN SOCKET Filed July 6, 1920' Patented Mar. 24, 1925.

U MTTED TATES:

JOHN-B.'ALLEN,TOFCHICAGO, LIiiors. Assrsnonro srraoKHoU @AIQLELL- 0F CHI I oaeo, ILLInoIs,aranrnnnsnrr.oonsis'riuc or JOHN sracxr ousn nun on-n R. ALLEN.

' S KET.

Application filed ll y 6,]1920. Serial 394,281.

i To all whom it they concern Beit known that 1, JOHN Zen of the cage, in the county of CookandState'of Illinois, have invented a certain new and useful Improvement in Sockets, of whiehthe following is a full, clear, coi'icise,and-- exact description, reference beinghad to the ac companying drawings," forming apart of this specification; i

This invention relates to sockets for elec tric lights and more particularly to a lamp socket provided with a chain pull for operating the switch mounted in said socketi In the type of the socket now in use the ,chain pullis-provided with a guide th'at is held between the insulating members upon;

which the'switoh is mounted and thecmter shell of the'so cketc This guide is made separate piece and is merelyclamped be twoen said insulating members and shell whichprovidesa small part that is diftici' lt to handle when wiring the'socket.

It is'a purpose of this invention and which "does not in any way interfere with separating and replac ng into pos tion the parts of the oiiter'shell' of: the socket,

thus eliminating a small loose part. In or der to carry out this purpose the chain guide is secured preferably to a current carrying part of the socket and it has been found par-' ticularly advantageous to secure the same to I i the screw shell terminal.

As the chain guide must be a dead part, that is, must carry no current, it is a further purpose of the invention to properly insulate the same from the current carrying part to which it is attached. 1

Further objects and advantages of the invention will appear as the description of the accompanying drawings, showing certain forms that my invention may take, proceeds. In the drawings in which similar parts are referred to by similar reference characters.

Fig. 1 is an end view of the socket looking toward'the cap end thereof, with the cap removed;

Fig. 2 is a longitudinal sectional view of the socket, a portion of the shell and theswitch mechanism being shown in elevation; 1' 1g. 3 is an enlarged sectional view of the -li1iiiig'12f v a r to provide This invent on more-particularly concerns i a chain guide for a pull socket' thatis' per-f' inaneiitly seouredto a portion of s'aid'soclnet,

I i chain-guide anda'fragment ofthe screw R. ALnnN, a citi-fi United States, residing at 0111-" Shell showing'tliemanner in which the chain guide is attached thereto, and Fig. 4' is afraginentary sectional view-of "OFFICE;

the screw shell and insulators carrying. the

switch mechanism," and a modified form of chain guide] associated therewith;

Referring in detail. to the accompanying drawings Figsll to 3 inclusive show one form that my invention may take and-in which is SllOWii' a chain fpull-ilainp socket comprisingan outer. shell 5 provided with a cap piece 6 ofthe' usi'ial construction. 'VVitl in the shell is the switch mechanism mounted upon the insulators 8 and 9 preferably of porcelain. "The'swite'h mechanism? is of the usual type-usedin a chain pull s'i'vitoh and is operated by the chain 10.,

Mounted on onset the insulators 9 isthe screw shell terminal 11 of the usual construc-.-

tion. Separating the screw shell portion-11 and the outer shell5 is the usual insulating itself with providing a guide-for thechain opening fering with the movement thereof in any way. 1

The bell portion 14 is mounted upon a base 15 having a right angular extension 16 which is secured to the end portion 17 of the screw shell inany suitable manner as by a screw .18. It will thus be seen thata chain guide is provided that extends between the insulator 9 and'the outer shell 5 and is carried by the screw shell 11. As the screw shell 11 is a live or current carrying part and as it is necessary that the chain guide be dead or carry no current, insulating ineansinust be provided between the screw shell and the chain guide. This insulating means comprises a flat fibre insulating member 19 surrounding the screw 18 and interposed between the right angular. extension 16 and the end 17 of the screw shell and an insulator 20 having a portion extending be tween the head of thescrew 18 and the end v at both the insideand the "outside I thereof and through Which-the chain 9 extends thus guiding the chain without inter-.

of the screw shell 17 and having a sleeve like extension 21 surrounding the shank of the screw and extending to the insulating mem ber 19.

An examination of Fig. 3 of the drawing will disclose that the insulating members 19 and 20 completely separate the metallic por-v tions associated with the chain guide and the screw shell in such a way as to completely insulate the same from the screw shell thus providing a chain guide that is permation of the insulating member 8 to brace the chain guide and preferably the insulat- .ing member 8 is provided with a recess 23 in which the extreme end portion 24 of the extension 22 may seat, thus preventing both swinging of the chain guide edgewise thereof and protecting the same against any unusual strain placed thereon in handling the same when the outer shell of the socket is removed.

From theabove it will be apparent that a chain guide has been provided that is permanently attached to a portion of the socket so that the'same cannot be readily separated therefrom when the socket is assembled and which eliminates a loose part this is diflicult to handle when wiring a socket.

Having thus described my invention I desire it to be distinctly understood that I do not intend to limit myself to the exact details shown in the accompanying drawings and described in the specification except as defined by the following claims:

1. In a lamp socket, a current carrying part, a chain guide, means for securing said guide rigidly to said current carrying part in fixed relation thereto, and, means for insulating said guide from said current carrying part.

2. In a device oft-he character described, a metallic current carrying part, a chain guide, means for clamping said guide rigidly to said current carrying part in fixed relationship thereto, and means for insulating said guide from said current carrying part.

3. In a lamp socket of the character described a current carrying part, a metallic chain guide, a screw for clamping said guide to said current carrying part of said socket, an insulating member between said chain guide and current carrying part, and an in .sulating member surrounding the shank of said screw and extending between the head thereof and said current carrying part to insulate said chain guide from said current carrying part.

1. In a lamp socket of the character described, a chain guide, means for clamping said guide to a current carrying part of said socket and an insulating member clamped between said guide and said current carrying part. Y

5. In a lamp socket of the character described, a chaln guide, means forclamping said guide to a current carrying part of said socket and insulating members between said guide and said current carryin part and between said securinn means an said'current carrying part.-

In witness whereof, I hereunto subscribe my name this 28th day of June, A. I). 1920.

JOHN R. ALLEN. 

